Species

Geranium macrorrhizumBigroot Geranium

3 other cultivars

perennial

Johnson's Cranesbill

Geranium macrorrhizum 'Johnson'

The Story

Plant Bio

A hardy perennial with a mat-forming habit and fragrant foliage.

The 'Johnson' cultivar is known for its dense growth and vibrant pink flowers.

Uses & Benefits:

Geranium macrorrhizum Johnson provides lush foliage and fragrant flowers, making it a charming groundcover for shaded and sunny gardens.

Its drought tolerance reduces watering needs, and it helps prevent soil erosion on slopes.

Attracts pollinators like bees and butterflies, supporting local biodiversity.

SpeciesGeranium macrorrhizumBigroot Geranium

Essentials

At a Glance

Plant Type

Perennial

Height

12 inches

Width

24 inches

Light

Full Sun, Partial Sun, Shade

Zones

4, 5, 6, 7, 8

Water

Moderate, drought tolerant once established

Humidity

Prefers well-drained soils with average humidity

Lifespan

Perennial

Native To

Mediterranean region

Toxicity

Non-toxic to humans and pets

Bloom period

Mid-spring – Late spring

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds lightly into well-draining soil in early spring.
Water regularly to keep soil moist but not soggy during first growing season.
Mist cuttings to maintain humidity and encourage root growth.
Transplant young plants in early fall for best establishment.
Divide clumps every 3-4 years in early spring to rejuvenate growth.
Mulch around plants to conserve moisture and suppress weeds.

Pro Tip

Ensure well-draining soil to prevent root rot and promote healthy growth.

Keep It Thriving

Care Guide

Do

Water deeply during dry spells 🌱
Prune after flowering to maintain shape
Fertilize lightly in spring with a balanced fertilizer
Mulch to retain moisture
Provide full sun for optimal flowering

Don't

Avoid overwatering which can cause root rot ❌
Don't plant in heavy clay soil without amendments
Refrain from excessive fertilizing to prevent leggy growth
Do not disturb roots frequently

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Mulch
Prune
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Silver-foliaged groundcoverShady border accentErosion control on slopes

Companion Plants

Lavender Salvia Sedum Nepeta Coreopsis

Multiply

Propagation Methods

Good to Know

Common Questions

Johnson's Cranesbill questions

What zones can Johnson's Cranesbill grow in?

Johnson's Cranesbill is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Johnson's Cranesbill deer resistant?

Yes — Johnson's Cranesbill is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Johnson's Cranesbill bloom?

Johnson's Cranesbill typically blooms in mid-spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Johnson's Cranesbill need full sun?

Johnson's Cranesbill does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Johnson's Cranesbill drought tolerant?

Yes — once established (usually after the first full season), Johnson's Cranesbill handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.